Variation Analysis Case Study – Cummins Engine

 

Definition of Engine Belt length Using the Statistic Dimensional Variation Analysis and Assembly Variation of Front Engine Accessories Drive

 

  부품의 치수 구조와 통계적 변동이 조립 변동에 어떤 영향을 미치는지 정의 /또는 검증하는 강력하고 확실한 방법론입니다.

  이 연구는 커민스(Cummins) 고객의 조립 라인에서 발생한 문제를 해결하기 위해 수행되었습니다. 이는 리니어 벨트 텐셔너 조립 중에 발생하는 문제입니다.

"벨트 텐셔너를 조립하는 것이 너무 힘들 때가 많다!"는 것이 고객의 목소리였습니다.
 “Many times it is too hard to assemble the Belt Tensioner!”

  이 논문은 커민스 브라질에서 수행한 분석 결과를 보여줍니다. 분석 프로세스는 Dimensional Variation Analysis 방법론, 통계 소프트웨어인 Minitab, Pro/Engineer 및 CETOL 6 Sigma를 사용하여 FEAD(전방 엔진 구동 액세서리) 벨트 경로의 길이를 검증하고, 그 결과를 벨트 길이의 변화와 비교했습니다.

  고객은 3차원 DVA 분석을 통해 입증되었습니다. 설계 결과, 조립 과정에서 최대 16%의 FEAD에 문제가 발생할 수 있는 것으로 나타났습니다. 이러한 결과와 방법론을 바탕으로 조립 라인과 설계의 개선 사항이 정의되었습니다.

 

 

ABSTRACT

This is a solid methodology to define and/or verify how the dimensional schema of the parts and their statistical variation affect the assembly variation.

 

This study has been done to fix an issue in the assembly line of a Cummins’ customer. This is a problem that occurs during the assembly of the Linear Belt Tensioner.

 

The voice of customer says “Many times it is too hard to assemble the Belt Tensioner!”

 

The paper shows the analysis performed at Cummins Brazil. The analysis process utilized the Dimensional Variation Analysis methodology, statistical software - Minitab, Pro/Engineer and CETOL 6 Sigma to verify the length of the FEAD (Front Engine Drive Accessories) belt path. , the results were compared with the variation of the Belt length.

 

The voice of customer was proved by the three-dimensional DVA analysis. The design shows up to 16% of the FEADs could have problems during the assembly. The improvement in the assembly line and in the design has been defined based on these results and methodology.

 

 

 

 

 

 

 

https://www.sigmetrix.com/case-studies-2/tolerance-analysis-case-studies-white-papers/variation-analysis-case-study-cummins-engine/

Variation Analysis Case Study - Cummins Engine

Variation Analysis Case Study - Cummins Engine

Dimensional Variation Analysis (DVA) has evolved along with quality methodologies applied in the factories, especially in the automobile industry. Sigmetrix

www.sigmetrix.com

 

 

https://www.sae.org/publications/technical-papers/content/2011-36-0059/

Definition of Engine Belt Length using the Statistic Dimensional Variation Analysis and Assembly Variation of Front Engine Acces

Definition of Engine Belt Length using the Statistic Dimensional Variation Analysis and Assembly Variation of Front Engine Accessories Drive

This is a strong and solid methodology to define and/or verify how the dimensional schema of the parts and their statistical variation affect the assembly variation.This study has been done to fix an issue in the assembly line of a Cummins' customer. This is a problem that occurs during the assembly

 

 

 

DOI: https://doi.org/10.4271/2011-36-0059

Citation: Baiao, D. and Lange, D., "Definition of Engine Belt Length using the Statistic Dimensional Variation Analysis and Assembly Variation of Front Engine Accessories Drive," SAE Technical Paper 2011-36-0059, 2011, https://doi.org/10.4271/2011-36-0059.

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Author(s): David Santos Baiao, Dan Lange

Affiliated: Cummins Brasil Ltda., Sigmetrix, LLC

Pages: 20

Event: SAE Brasil 2011 Congress and Exhibit

ISSN: 0148-7191

e-ISSN: 2688-3627